Simple Distributed Multihop Diversity Relaying Based on Repetition for Low-Power-Low-Rate Application

• Author / Creator

  Li, Yanwen

• Low data rate, reliable wireless connectivity among inexpensive fixed, portable and mobile devices is needed in some home automation, industrial control, medical sensing, and reality applications. Such applications are the subject of the IEEE 802.15.4 Standard, and require low power, yet reliable data transfer, but have reduced requirements on data rate and throughput. Multihop relaying systems employing time diversity are proposed for these applications. The performance of repetition-based relaying with amplify-and-forward (AF) and decode-and-forward (DF) protocols operating in Rayleigh fading is studied. Analytical expressions for the symbol error probability (SEP) of the system are derived for both AF and DF relaying protocols. The repetition-based multihop transmission systems achieve diversity order equal to the number of repetitions with AF and DF relaying. It is shown that repetition-based DF relaying systems achieve better SEP than repetition-based AF relaying systems for medium to large values of signal-to-noise ratio.

• Subjects / Keywords

  • Relaying network
  • Multihop diversity
  • Diversity order
  • Amplify-and-forward
  • Decode-and-forward
  • IEEE 802.15.4 standard

• Graduation date

  Spring 2012

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3292B

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.